Compilare: user.cpp: In function ‘int main()’: user.cpp:31:12: warning: unused variable ‘t’ [-Wunused-variable] int n, i, t, nr,sum; ^ user.cpp:31:15: warning: unused variable ‘nr’ [-Wunused-variable] int n, i, t, nr,sum; ^ user.cpp:31:18: warning: unused variable ‘sum’ [-Wunused-variable] int n, i, t, nr,sum; ^ user.cpp:33:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:36:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &v[i]); ^